Circuit board processing noise reduction device and use method

Abstract

The invention belongs to the field of noise reduction equipment, and particularly relates to a circuit board machining noise reduction device and a using method.The circuit board machining noise reduction device comprises a workbench, a plurality of supporting legs are installed at the bottom of the workbench, two sound insulation frames are slidably installed at the top of the workbench, and a guide mechanism is arranged between the sound insulation frames and the workbench; an observation window is formed in the front side of the sound insulation frame, two pieces of double-layer sound insulation glass are detachably installed in the observation window, a noise reduction assembly is installed on the inner wall of the sound insulation frame, an L-shaped frame is fixedly installed at the top of the workbench, and a first hydraulic cylinder is fixedly installed at the top of the L-shaped frame. The circuit board punching device is reasonable in design, the punching position of a circuit board can be adjusted through rotation and movement of the containing table, the purpose of punching different positions of the circuit board can be achieved, the containing table can be shielded through movement of a sound insulation frame and a noise reduction assembly, and therefore noise can be absorbed and blocked; therefore, the purpose of noise reduction can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction equipment, and in particular to a circuit board processing noise reduction device and a use method thereof. Background Art

[0002] When producing and processing circuit boards, a punching device is required. After searching, the patent document with the authorization announcement number CN212948182U discloses a circuit board punching device, including a workbench, the lower surface of the workbench is fixedly installed with supporting feet near the two sides, and the upper surface of the workbench is fixedly installed with guide rails, the top of the guide rails supports the support platform, and a locking pin is connected between the support platform and the guide rails. A supporting column is fixedly installed on the upper surface of the workbench near the rear position, and a lifting seat is movably installed on the front surface of the support column, and a driving motor is fixedly installed on the upper surface of the lifting seat, the output end of the driving motor is connected to a transmission shaft, and the bottom end of the transmission shaft is connected to a punching head, the inner side of the supporting foot is connected to a storage device, and the outer surface of one side of the workbench is connected to a stacking device.

[0003] During use, only designated positions of the circuit board can be punched, and holes cannot be drilled in other positions of the circuit board, which has certain limitations. In addition, during the processing of the circuit board, large noises are often generated. These noises will not only harm the health of the workers, but also affect the surrounding environment. Therefore, we propose a circuit board processing noise reduction device and a method of use to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a circuit board processing noise reduction device and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A circuit board processing noise reduction device comprises a workbench, a plurality of supporting legs are installed at the bottom of the workbench, two sound insulation frames are slidably installed on the top of the workbench, a guide mechanism is provided between the sound insulation frame and the workbench, an observation window is provided on the front side of the sound insulation frame, two double-layer sound insulation glasses are detachably installed in the observation window, a noise reduction component is installed on the inner wall of the sound insulation frame, an L-shaped frame is fixedly installed on the top of the workbench, a hydraulic cylinder 1 is fixedly installed on the top of the L-shaped frame, a control box is fixedly installed on the bottom end of the output shaft of the hydraulic cylinder 1, a rotating motor is fixedly installed in the control box, the output shaft of the rotating motor extends to the bottom of the control box and is fixedly installed with a drill bit, and a placement table for placing the circuit board is placed on the top of the workbench;

[0007] A movable groove is provided at the bottom of the workbench, and a movable hole is provided on the top inner wall of the movable groove. A U-shaped frame is fixedly installed at the bottom of the workbench, and a sliding seat is slidably installed on the U-shaped frame. A reduction motor is fixedly installed on the top of the sliding seat, and the output shaft of the reduction motor is fixedly connected to the placement table. A hydraulic cylinder 2 is fixedly installed on one side of the U-shaped frame, and the output shaft of the hydraulic cylinder 2 is fixedly connected to the sliding seat. Two limit seats are fixedly installed on the top of the sound insulation frame, and the same limit rod is fixedly installed on the side where the two limit seats are close to each other. L-shaped slide seats are fixedly installed on both sides of the L-shaped frame, and the L-shaped slide seat sliding sleeves are arranged on the corresponding limit rods.

[0008] Preferably, the noise reduction component includes sound insulation cotton, a sound-absorbing board and a sound-absorbing layer. The sound insulation cotton is fixedly mounted on the inner wall of the sound insulation frame, the sound-absorbing board is mounted on the sound insulation cotton, and the sound-absorbing layer is mounted on the sound-absorbing board.

[0009] Preferably, the guide mechanism includes a T-shaped slot and a T-shaped seat, the T-shaped slot is opened on the top of the workbench, the T-shaped seat is fixedly installed on the bottom of the sound insulation frame, and the T-shaped seat is slidably connected to the corresponding T-shaped slot.

[0010] Preferably, spur racks are fixedly installed on the front and rear inner walls of the sound insulation frame, a plurality of rectangular grooves are provided at the bottom of the workbench, a rotating hole is provided on the top inner wall of the rectangular groove, a rotating shaft is rotatably installed in the rotating hole, the top end of the rotating shaft extends to the top of the workbench and a rotating gear is fixedly installed thereon, and the rotating gear is meshed with the corresponding spur racks.

[0011] Preferably, a same driving shaft is rotatably mounted on the inner walls of the two corresponding rectangular grooves that are away from each other, a driving bevel gear is fixedly mounted on the driving shaft, a driven bevel gear is fixedly mounted on the bottom end of the rotating shaft, and the driving bevel gear is meshed with the corresponding driven bevel gear.

[0012] Preferably, a shell is fixedly mounted on one side of the placement table, and the left end of the drive shaft extends into the shell and is provided with a synchronization mechanism, and a drive motor is fixedly mounted on one side of the shell, and the drive motor is fixedly connected to the corresponding drive shaft.

[0013] Preferably, the synchronization mechanism comprises a sprocket and a chain, the sprocket is fixedly mounted on the drive shaft, and the transmission sleeves on the two sprockets are provided with the same chain.

[0014] Preferably, a groove is provided on the top of the placement table, and two L-shaped fixing plates are fixedly installed on the top of the placement table, and a clamping mechanism for fixing the circuit board is provided on the L-shaped fixing plate.

[0015] Preferably, the clamping mechanism includes a threaded hole, a fixed screw, a clamping plate and a knob, the threaded hole is opened on the L-shaped fixed plate, the fixed screw is threadedly installed in the threaded hole, the bottom end of the fixed screw is fixedly installed with the clamping plate, and the top end of the fixed screw is fixedly installed with the knob.

[0016] A method for using a circuit board processing noise reduction device comprises the following steps:

[0017] S1: Place the circuit board on the placement table, and rotate the knob and the fixing screw. Under the action of the threaded hole, the fixing screw rotates and moves, and the fixing screw can drive the pressing plate to rotate and move downward. The pressing plate moves downward to press and fix the circuit board;

[0018] S2: By starting the driving motor, the driving motor can drive the corresponding driving shaft to rotate. Under the action of the sprocket and the chain, the two driving shafts rotate synchronously. Through the cooperation of the driving bevel gear and the driven bevel gear, one driving shaft can drive the two rotating shafts to rotate, and the rotating shaft can drive the rotating gear to rotate. The rotating gear can drive the sound insulation frame to move through the spur rack. At this time, the two sound insulation frames move towards each other and contact. When the rotating motor drives the drill bit to rotate to punch holes in the circuit board, the noise can be absorbed and blocked through the cooperation of the sound insulation cotton, the sound absorbing board and the sound absorbing layer, thereby achieving the purpose of noise reduction;

[0019] S3: The sliding seat can be driven to move by hydraulic cylinder 2, and the sliding seat can drive the placement table to move left and right through the rotating motor. At the same time, when the rotating motor is started, the rotating motor can drive the placement table to rotate through the output shaft. The punching position of the circuit board can be adjusted through the rotation and movement of the placement table, so as to achieve the purpose of punching holes in different positions of the circuit board.

[0020] Beneficial effects of the present invention:

[0021] 1. Place the circuit board on the placement table. Turn the knob and the fixing screw. Under the action of the threaded hole, the fixing screw rotates and moves. The fixing screw can drive the clamping plate to rotate and move downward. The clamping plate moves downward to clamp and fix the circuit board.

[0022] 2. Through the cooperation of the driving motor, driving shaft, sprocket and chain, driving bevel gear and driven bevel gear, one driving shaft can drive two rotating shafts to rotate, the rotating shaft can drive the rotating gear to rotate, and the rotating gear can drive the sound insulation frame to move through the spur rack. At this time, the two sound insulation frames move towards each other and contact. When the rotating motor drives the drill bit to rotate and punch holes in the circuit board, the noise can be absorbed and blocked through the cooperation of the sound insulation cotton, the sound absorbing board and the sound absorbing layer, thereby achieving the purpose of noise reduction;

[0023] 3. The sliding seat can be driven to move by hydraulic cylinder 2, and the sliding seat can drive the placement table to move left and right through the rotating motor. At the same time, when the rotating motor is started, the rotating motor can drive the placement table to rotate through the output shaft. The punching position of the circuit board can be adjusted through the rotation and movement of the placement table, so as to achieve the purpose of punching holes in different positions of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a circuit board processing noise reduction device proposed by the present invention;

[0025] Figure 2 A schematic diagram of a cross-sectional three-dimensional structure of a circuit board processing noise reduction device proposed by the present invention;

[0026] Figure 3 A schematic diagram of a partially cutaway three-dimensional structure of a circuit board processing noise reduction device proposed by the present invention;

[0027] Figure 4 A schematic cross-sectional view of a noise reduction component of a circuit board processing noise reduction device proposed by the present invention;

[0028] Figure 5 This is a schematic structural diagram of part A of a circuit board processing noise reduction device proposed by the present invention;

[0029] Figure 6 This is a schematic structural diagram of part B of a circuit board processing noise reduction device proposed by the present invention;

[0030] Figure 7 This is a schematic structural diagram of the C part of a circuit board processing noise reduction device proposed by the present invention;

[0031] Figure 8 This is a structural schematic diagram of part D of a circuit board processing noise reduction device proposed by the present invention.

[0032] In the figure: 1. workbench; 2. support leg; 3. soundproof frame; 4. observation window; 5. double-layer soundproof glass; 6. L-shaped frame; 7. hydraulic cylinder 1; 8. control box; 9. rotating motor; 10. drill bit; 11. placement table; 12. noise reduction component; 121. sound insulation cotton; 122. sound-absorbing board; 123. sound-absorbing layer; 13. limit seat; 14. limit rod; 15. L-shaped slide seat; 16. moving groove; 17. moving hole; 18. U-shaped frame; 19. sliding Seat; 20, reduction motor; 21, hydraulic cylinder 2; 22, groove; 23, L-shaped fixing plate; 24, threaded hole; 25, fixing screw; 26, clamping plate; 27, knob; 28, guide mechanism; 29, spur rack; 30, rectangular groove; 31, rotating hole; 32, rotating shaft; 33, rotating gear; 34, driven bevel gear; 35, driving shaft; 36, driving bevel gear; 37, driving motor; 38, sprocket; 39, chain; 40, housing. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. "Disposed" indicates a way of existence, which can be a connection method such as connection, installation, fixed connection, active connection, etc. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] Reference Figure 1-8, a circuit board processing noise reduction device comprises a workbench 1, a plurality of supporting legs 2 are installed at the bottom of the workbench 1, two sound insulation frames 3 are slidably installed on the top of the workbench 1, a guide mechanism 28 is provided between the sound insulation frame 3 and the workbench 1, an observation window 4 is provided on the front side of the sound insulation frame 3, two double-layer sound insulation glasses 5 are detachably installed in the observation window 4, a noise reduction component 12 is installed on the inner wall of the sound insulation frame 3, an L-shaped frame 6 is fixedly installed on the top of the workbench 1, a hydraulic cylinder 7 is fixedly installed on the top of the L-shaped frame 6, a control box 8 is fixedly installed on the bottom end of the output shaft of the hydraulic cylinder 7, a rotating motor 9 is fixedly installed in the control box 8, the output shaft of the rotating motor 9 extends to the bottom of the control box 8 and a drill bit 10 is fixedly installed, a placement table 11 for placing the circuit board is placed on the top of the workbench 1, more specifically, a through hole with an opening on one side is provided on one side of the sound insulation frame 3, and the output shaft of the hydraulic cylinder 7 is adapted to the two through holes, a movable groove 16 is provided on the bottom of the workbench 1, and the top of the movable groove 16 A movable hole 17 is provided on the inner wall, a U-shaped frame 18 is fixedly installed at the bottom of the workbench 1, a sliding seat 19 is slidably installed on the U-shaped frame 18, a reduction motor 20 is fixedly installed on the top of the sliding seat 19, and the output shaft of the reduction motor 20 is fixedly connected to the placement table 11, a hydraulic cylinder 21 is fixedly installed on one side of the U-shaped frame 18, and the output shaft of the hydraulic cylinder 21 is fixedly connected to the sliding seat 19, and two limit seats 13 are fixedly installed on the top of the sound insulation frame 3, and the two limit seats 13 are close to each other. The same limit rod 14 is fixedly installed on the side, and L-shaped slides 15 are fixedly installed on both sides of the L-shaped frame 6, and the L-shaped slides 15 are slidably mounted on the corresponding limit rods 14. More specifically, the guiding mechanism 28 includes a T-shaped slot and a T-shaped seat, the T-shaped slot is opened on the top of the workbench 1, the T-shaped seat is fixedly installed on the bottom of the sound insulation frame 3, and the T-shaped seat is slidably connected to the corresponding T-shaped slot, which can guide the sound insulation frame 3, thereby achieving the purpose of stable movement of the sound insulation frame 3.

[0037] In this embodiment, the noise reduction component 12 includes sound insulation cotton 121, a sound-absorbing plate 122 and a sound-absorbing layer 123. The sound insulation cotton 121 is fixedly installed on the inner wall of the sound insulation frame 3, and the sound-absorbing plate 122 is installed on the sound insulation cotton 121. More specifically, a plurality of sound-absorbing holes are opened on the sound-absorbing plate 122, and the sound-absorbing layer 123 is installed on the sound-absorbing plate 122. The sound insulation cotton 121 can block the noise, and the cooperation of the sound-absorbing layer 123 and the sound-absorbing plate 122 can absorb the noise, thereby achieving the purpose of noise reduction.

[0038] In this embodiment, spur racks 29 are fixedly installed on the front and rear inner walls of the sound insulation frame 3, a plurality of rectangular grooves 30 are provided at the bottom of the workbench 1, and a rotating hole 31 is provided on the top inner wall of the rectangular groove 30. A rotating shaft 32 is rotatably installed in the rotating hole 31. The top end of the rotating shaft 32 extends to the top of the workbench 1 and is fixedly installed with a rotating gear 33, and the rotating gear 33 is meshed with the corresponding spur rack 29. The rotation of the rotating gear 33 can drive the sound insulation frame to move through the spur rack 29. The same driving shaft 35 is rotatably installed on the inner walls of the two corresponding rectangular grooves 30 that are away from each other, and a driving bevel gear 36 is fixedly installed on the driving shaft 35. A driven bevel gear 34 is fixedly installed on the bottom end of the rotating shaft 32, and the driving bevel gear 36 is meshed with the corresponding driven bevel gear 34. The two driving bevel gears 36 located on the front side are located between the two driven bevel gears 34, and the two driven bevel gears 34 located on the rear side are located between the two driving bevel gears 36.

[0039] In this embodiment, a shell 40 is fixedly installed on one side of the placement table 11, and the left end of the drive shaft 35 extends into the shell 40 and is provided with a synchronization mechanism. A drive motor 37 is fixedly installed on one side of the shell 40, and the drive motor 37 is fixedly connected to the corresponding drive shaft 35. The synchronization mechanism includes a sprocket 38 and a chain 39. The sprocket 38 is fixedly installed on the drive shaft 35, and the transmission sleeves on the two sprockets 38 are provided with the same chain 39. By providing the sprocket 38 and the chain 39, the two drive shafts 35 can be rotated synchronously.

[0040] In this embodiment, a groove 22 is provided on the top of the placement table 11, and two L-shaped fixing plates 23 are fixedly installed on the top of the placement table 11. The L-shaped fixing plate 23 is provided with a clamping mechanism for fixing the circuit board, and the clamping mechanism includes a threaded hole 24, a fixing screw 25, a clamping plate 26 and a knob 27. The threaded hole 24 is provided on the L-shaped fixing plate, and the fixing screw 25 is threadedly installed in the threaded hole 24. The bottom end of the fixing screw 25 is fixedly installed with a clamping plate 26, and the top end of the fixing screw 25 is fixedly installed with a knob 27. By providing the fixing screw 25 and the clamping plate 26, the fixing screw 25 can drive the clamping plate 26 to move and clamp and fix the circuit board.

[0041] A method for using a circuit board processing noise reduction device comprises the following steps:

[0042] S1: Place the circuit board on the placement table 11, and rotate the knob 27 and the fixing screw 25. Under the action of the threaded hole 24, the fixing screw 25 rotates and moves, and the fixing screw 25 can drive the pressing plate 26 to rotate and move downward. The pressing plate 26 moves downward to press and fix the circuit board;

[0043] S2: By starting the driving motor 37, the driving motor 37 can drive the corresponding driving shaft 35 to rotate. Under the action of the sprocket 38 and the chain 39, the two driving shafts 35 rotate synchronously. Through the cooperation of the driving bevel gear 36 and the driven bevel gear 34, one driving shaft 35 can drive the two rotating shafts 32 to rotate, and the rotating shaft 32 can drive the rotating gear 33 to rotate. The rotating gear 33 can drive the sound insulation frame 3 to move through the spur rack 29. At this time, the two sound insulation frames 3 move toward each other and contact. When the rotating motor 9 drives the drill bit 10 to rotate to punch holes in the circuit board, the noise can be absorbed and blocked through the cooperation of the sound insulation cotton 121, the sound silencing board 122, and the sound absorbing layer 123, so as to achieve the purpose of noise reduction;

[0044] S3: The hydraulic cylinder 21 can drive the sliding seat 19 to move, and the sliding seat 19 can drive the placement table 11 to move left and right through the rotating motor 9. At the same time, when the rotating motor 9 is started, the rotating motor 9 can drive the placement table 11 to rotate through the output shaft. Through the rotation and movement of the placement table 11, the punching position of the circuit board can be adjusted, and the purpose of punching holes in different positions of the circuit board can be achieved.

[0045] The above is a detailed introduction to a circuit board processing noise reduction device and a method of use provided by the present invention. This article uses specific embodiments to explain the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A circuit board processing noise reduction device, characterized in that: The invention comprises a workbench (1), wherein a plurality of supporting legs (2) are installed at the bottom of the workbench (1), two sound insulation frames (3) are slidably installed at the top of the workbench (1), a guide mechanism (28) is provided between the sound insulation frame (3) and the workbench (1), an observation window (4) is provided on the front side of the sound insulation frame (3), two double-layer sound insulation glasses (5) are detachably installed in the observation window (4), and a noise reduction component (12) is installed on the inner wall of the sound insulation frame (3); An L-shaped frame (6) is fixedly mounted on the top of the workbench (1), a hydraulic cylinder (7) is fixedly mounted on the top of the L-shaped frame (6), a control box (8) is fixedly mounted on the bottom end of the output shaft of the hydraulic cylinder (7), a rotating motor (9) is fixedly mounted in the control box (8), the output shaft of the rotating motor (9) extends to the bottom of the control box (8) and is fixedly mounted with a drill bit (10), and a placement table (11) for placing a circuit board is placed on the top of the workbench (1); The bottom of the workbench (1) is provided with a movable groove (16), and the top inner wall of the movable groove (16) is provided with a movable hole (17); a U-shaped frame (18) is fixedly installed at the bottom of the workbench (1), a sliding seat (19) is slidably installed on the U-shaped frame (18), a reduction motor (20) is fixedly installed on the top of the sliding seat (19), and the output shaft of the reduction motor (20) is fixedly connected to the placement table (11); a hydraulic cylinder 2 (21) is fixedly installed on one side of the U-shaped frame (18), and the output shaft of the hydraulic cylinder 2 (21) is fixedly connected to the sliding seat (19); Two limit seats (13) are fixedly mounted on the top of the sound insulation frame (3); a same limit rod (14) is fixedly mounted on the side of the two limit seats (13) close to each other; L-shaped slide seats (15) are fixedly mounted on both sides of the L-shaped frame (6); and the L-shaped slide seats (15) are slidably mounted on the corresponding limit rods (14).

2. A circuit board processing noise reduction device according to claim 1, characterized in that: The noise reduction component (12) comprises sound insulation cotton (121), a sound absorbing board (122) and a sound absorbing layer (123); the sound insulation cotton (121) is fixedly mounted on the inner wall of the sound insulation frame (3); the sound absorbing board (122) is mounted on the sound insulation cotton (121); and the sound absorbing layer (123) is mounted on the sound absorbing board (122).

3. A circuit board processing noise reduction device according to claim 1, characterized in that: The guide mechanism (28) comprises a T-shaped slot and a T-shaped seat, wherein the T-shaped slot is provided on the top of the workbench (1), the T-shaped seat is fixedly mounted on the bottom of the sound insulation frame (3), and the T-shaped seat is slidably connected to the corresponding T-shaped slot.

4. A circuit board processing noise reduction device according to claim 1, characterized in that: The front and rear inner walls of the sound insulation frame (3) are both fixedly mounted with spur racks (29); a plurality of rectangular grooves (30) are provided at the bottom of the workbench (1); a rotating hole (31) is provided on the top inner wall of the rectangular groove (30); a rotating shaft (32) is rotatably mounted in the rotating hole (31); the top end of the rotating shaft (32) extends to the top of the workbench (1) and is fixedly mounted with a rotating gear (33); and the rotating gear (33) is meshed with the corresponding spur rack (29).

5. A circuit board processing noise reduction device according to claim 4, characterized in that: A same driving shaft (35) is rotatably mounted on the inner walls of the two corresponding rectangular grooves (30) which are away from each other, a driving bevel gear (36) is fixedly mounted on the driving shaft (35), a driven bevel gear (34) is fixedly mounted on the bottom end of the rotating shaft (32), and the driving bevel gear (36) is meshed with the corresponding driven bevel gear (34).

6. A circuit board processing noise reduction device according to claim 5, characterized in that: A housing (40) is fixedly mounted on one side of the placement table (11), and the left end of the drive shaft (35) extends into the housing (40) and is provided with a synchronization mechanism. A drive motor (37) is fixedly mounted on one side of the housing (40), and the drive motor (37) is fixedly connected to the corresponding drive shaft (35).

7. A circuit board processing noise reduction device according to claim 6, characterized in that: The synchronization mechanism comprises a sprocket (38) and a chain (39); the sprocket (38) is fixedly mounted on the drive shaft (35); and the transmission sleeves on the two sprockets (38) are provided with the same chain (39).

8. A circuit board processing noise reduction device according to claim 1, characterized in that: A groove (22) is provided on the top of the placement platform (11), and two L-shaped fixing plates (23) are fixedly mounted on the top of the placement platform (11). A clamping mechanism for fixing the circuit board is provided on the L-shaped fixing plates (23).

9. A circuit board processing noise reduction device according to claim 8, characterized in that: The clamping mechanism comprises a threaded hole (24), a fixing screw (25), a clamping plate (26) and a knob (27); the threaded hole (24) is formed on the L-shaped fixing plate (23); the fixing screw (25) is threadedly mounted in the threaded hole (24); the bottom end of the fixing screw (25) is fixedly mounted with the clamping plate (26); and the top end of the fixing screw (25) is fixedly mounted with the knob (27).

10. A method for using a circuit board processing noise reduction device, characterized in that: The following steps are involved: S1: Place the circuit board on the placement table (11), and rotate the knob (27) and the fixing screw (25), so that the fixing screw (25) rotates and moves under the action of the threaded hole (24), and the fixing screw (25) can drive the pressing plate (26) to rotate and move downward, and the pressing plate (26) moves downward to press and fix the circuit board; S2: By starting the driving motor (37), the driving motor (37) can drive the corresponding driving shaft (35) to rotate. Under the action of the sprocket (38) and the chain (39), the two driving shafts (35) rotate synchronously. Through the cooperation of the driving bevel gear (36) and the driven bevel gear (34), one driving shaft (35) can drive the two rotating shafts (32) to rotate. The rotating shaft (32) can drive the rotating gear (33) to rotate. The rotating gear (33) can drive the sound insulation frame (3) to move through the spur rack (29). At this time, the two sound insulation frames (3) move in a direction close to each other and contact each other. When the rotating motor (9) drives the drill bit (10) to rotate to perform drilling processing on the circuit board, the noise can be absorbed and blocked through the cooperation of the sound insulation cotton (121), the sound absorbing board (122) and the sound absorbing layer (123), thereby achieving the purpose of noise reduction. S3: The sliding seat (19) can be driven to move by the second hydraulic cylinder (21), and the sliding seat (19) can drive the placement table (11) to move left and right through the rotating motor (9). At the same time, when the rotating motor (9) is started, the rotating motor (9) can drive the placement table (11) to rotate through the output shaft. Through the rotation and movement of the placement table (11), the punching position of the circuit board can be adjusted, so that the purpose of punching holes at different positions of the circuit board can be achieved.

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